Guitar Hero Live
50 Achievements
1,000
80-100h
Power Crazy!
You used a Hero Power 6 times during a song in GHTV.
50
0.49%
How to unlock the Power Crazy! achievement in Guitar Hero Live - Definitive Guide
Get "Hero Sections" fully upgraded 4/4 in guitar upgrades within the store (the most you get at 3/4 seems to be 4 and at 4/4 you can get as many as 12!)
...and in some cases another that you'll need to meet;
Get 6 of any unlockable hero power. By that I mean any hero power other than the initial bombs you are given (these don't seem to unlock the achievement for SOME PEOPLE, may work for you).
Once that is set up ready you can either play GHTV until a lengthy enough song comes around or pick a song from the catalog if you have a play token available. I recommend "Cry of Achilles - Alter Bridge" as it has 12/13 hero sections, even on normal. It's also more than lengthy enough to obtain and activate all 6 of the longer hero powers like dial up and down.
Just a side note - you can actually get six of a hero power that you only have say 3 of, if you save them all up at once. However, when you go to activate them the last 3 will turn into bombs so this will not work.
Good luck!
After getting it to the max level, just hop into a song and make sure to hit all of the Hero Power sections and then use all of them before the song ends.
I tried this on "Cry Achilles" and I think I got somewhere around 10-15 hero powers with my 'blow up notes' power and never got the achievement.
As soon as I swapped to the 'Double multiplier' power it popped mid song after 6 uses.
Use a free play on GH TV ( you get 3 everyday if you have 0 when you log in ) and choose the song Movies by Alien Ant Farm. there's at least 8 on Advanced difficulty so you can miss a couple and still have enough. I did it with the starting hero power which you have infinite of.
(Online - UNOBTAINABLE DUE TO SERVER CLOSURE)
Hero Powers can be used in a song on GHTV when you hit all of the Hero Power notes in a row, which are those with a slight blue colour and a lightning bolt through the centre. Once done, you can press the Hero Power button on your guitar or tilt the neck upwards to activate it. You have unlimited access to the "Bomb" Hero Power which temporarily removes the notes from the highway but all others that you unlock as you level up can only be used a finite number of times before you have to purchase new ones for an average of 350 gold coins from the store.
You will only be presented with 6 opportunities to earn the Hero Power in a single song once you have fully upgraded the Hero Power guitar skill. You can upgrade it a total of three times for 6,000, 9,000 and 15,000 gold coins respectively. Once it has been fully upgraded, enter into the free channels and keep playing songs. I found that even once the skill had been maxed out some songs only presented 5 Hero Power note sequences so it may take time before an appropriate song starts that allows you earn the trophy. If you're struggling to hit all of the note sequences to unlock the Hero Power, then you can earn the trophy on a lower difficulty such as Basic as well which makes it significantly easier.